Has this been submitted as a bug or is there something intrinsically incompatible with adding a contentpanel to an according after it has been attached?

I built a data driven AccordionLayoutContainer. When I was mocking the data locally everything worked fine. But when I wired this to the backend, I got the assert error because I am now fetching the data async.

The problem happens when you add the contentpanel to the accordion in this code:

Has this been submitted as a bug or is there something intrinsically incompatible with adding a contentpanel to an according after it has been attached?

I built a data driven AccordionLayoutContainer. When I was mocking the data locally everything worked fine. But when I wired this to the backend, I got the assert error because I am now fetching the data async.

The problem happens when you add the contentpanel to the accordion in this code: